Tire tread



FIG. 1 is a perspective view of a tire tread showing our new design, it being understood that the tread pattern is repeated throughout the circumference of the tire, and that the broken lines illustrate environmental structures which form no part of the claimed design; and,

FIG. 2 is an enlarged fragmentary plan view of the tire tread illustrated in FIG. 1. 

The ornamental design for a tire tread, as shown and described. 